Lg Innotek Co., Ltd.

Hyo Yun Jung

Seok Bae

Dong Keun Lee

Kyung Sang Park

Young Hwan Jung

Ju Yeon Won

The present invention may provide a motor including a housing, a stator disposed inside the housing, a rotor disposed inside the stator, and a shaft coupled to the rotor, wherein the rotor includes a rotor core and magnets including a plurality of unit magnets coupled to an outer circumferential surface of the rotor core, the rotor core includes grooves disposed at a boundary between an inner circumferential surface and an upper surface of the rotor core, the shaft includes a first body, a plurality of blades extending outward from an upper surface of the first body, and a protrusion extending downward from a lower surface of the first body, and a side edge of the blade is positioned at a lateral center of the unit magnet when the protrusion is disposed in the groove.

Motor

An embodiment provides a motor comprising: a stator including a through hole; a cylindrical rotor which is disposed in the through hole; a rotor center shaft which is formed in the central region of the rotor and to which a rotary shaft is coupled; and a first magnet and a second magnet which are disposed between the stator and the rotor, wherein: the rotor includes an outer contour portion and a patterned portion formed between the outer contour portion and the rotor center shaft; the patterned portion includes a plurality of unit patterns and a hollow portion formed in each of the unit patterns; the outer contour portion includes an outer circumferential surface on which the first magnet and the second magnet are disposed and an inner circumferential surface which comes in contact with the plurality of unit patterns; the inner circumferential surface of the outer contour portion further includes a first protrusion portion protruding in a first direction toward the rotor center shaft; and in the first direction, the maximum length of the first protrusion portion is greater than the maximum length of each of the unit patterns.

Growing community of inventors

Seoul, South Korea

Hyo Yun Jung